1)too…to 太…以至于…。例如:
He is too excited to speak. 他太激动了,说不出话来。
---- Can I help you ? 需要我帮忙吗?
---- Well, I’m afraid the box is too heavy for you to carry it, but thank you all the same.
不用了。这箱子太重,恐怕你搬不动。谢谢。
2) 如在too前有否定词,则整个句子用否定词表达肯定,too 后那个词表达一种委婉含义,意 为"不太".例如:
It’s never too late to mend. 改过不嫌晚。(谚语)
3) 当too 前面有only, all, but时,意思是:非常… 等于very.例如:
I’m only too pleased to be able to help you. 能帮助你我非常高兴。
He was but too eager to get home. 他非常想回家。